v.要紧( matter的过去式和过去分词 )；化脓；有重大影响；有重要性 双语释义：n.(名词)[U]物质,物体 the material which makes up the world and everything in space which can be seen or touched[U]题材,内容 a subject itself as opposed to the form in which it is spoken or written about[C]事情,问题 affair; sub